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Evolution Test - 90

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Evolution Test - 90
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  • Question 1
    1 / -0
    Experimental proof that organic compounds formed the basis of evolution was given by :
  • Question 2
    1 / -0
    The forces that change the allele and genotype frequencies of a population are 
    Solution
    The Hardy-Weinberg equilibrium states that the frequencies of alleles and genotypes in a population will remain constant from generation to generation assuming a large population size with no evolutionary influence including mutation, genetic drift, natural selection and gene flow between populations. Thus, the correct answer is ‘Evolutionary agents.’
  • Question 3
    1 / -0
    The age of fishes was
    Solution
    The Devonian, some portion of the Paleozoic time, is also called the Age of Fishes, as it brought forth an exceptional assortment of fish. The most considerable of them were the heavily clad placoderms, a gathering that previously showed up amid the Silurian with ground-breaking jaws fixed with bladelike plates that went about as teeth.
    So, the correct option is 'Devonian'.
  • Question 4
    1 / -0
    The drama of human evolution was dramatised in 
    Solution
    The old world monkeys which were most primitive man like animals had:
    • Nonprehensile tail.
    • U- shaped jaw.
    • Origin from Africa and Asia.
    • The menstrual cycle is seen in a female.
    So, the correct option is 'Asia and Africa'.
  • Question 5
    1 / -0
    Forelimbs of cat/lizard used in walking, forelimbs of whale used in swimming and forelimbs of bats used in flying are examples of 
    Solution
    The similarity based on common origin, the similar basic plan of organisation and embryonic development is called homology. The similarity in appearance and function is not necessary. The organs which have a common origin, embryonic development and same basic structure but perform different functions are called Homologous organ. The homologous term was given by Richard Owen.
    So, the correct answer is 'Homologous organs'.
  • Question 6
    1 / -0
    Which is correct order of increasing geological time scale for a hypothetical vertebrate evolution?
    Solution
    • The earth contains different layers of sediments, of which the bottom layer is the oldest layer and the upper layer is the most recent layer. Based on the age of rocks, a time scale was prepared and it is called the geological time scale, it depicts the different stages of the evolution of life on the earth over the past millions of years.
    • It consists of three Eons, that consists of Eras which are divided into Periods that may be further subdivided into Epochs. These Eras, Periods, Epochs depict the time of origin and the dominance of the certain group of animals during certain Eras or Periods. It provides the most direct evidence for the concept of evolution.
    • In order from oldest to youngest, the three Eons are as follows
    Archean Eon: ancient or archaic (oldest rocks on earth)
    Proterozoic Eon: beginning life (2.5 billion to 542 million years ago)
    Phanerozoic Eon: visible life (542 million years ago to present).
    • There are eras in the Phanerozoic aeon. In order from oldest to youngest, they are as follows:
    • 1) Precambrian Era: earliest part of earth's history.
    2) Paleozoic Era: ancient life (such as trilobites)
    3) Mesozoic Era: middle life (such as dinosaurs)
    4) Cenozoic Era: recent life (such as mammals and flowering plants).
    So, the correct option is 'Precambrian, Palaeozoic, Mesozoic, Cenozoic'.
  • Question 7
    1 / -0
    Mass extinction at the end of mesozoic era was probably caused by 
    Solution
    The Mesozoic Era started 252 million years prior with the biggest mass eradication in Earth's history and finished 66 million years back with the asteroid that slaughtered off the dinosaurs. This exercise will cover the essential occasions that happened amid the Mesozoic Era.
    So, the correct option is 'Collision of the earth with large meteorite'.
  • Question 8
    1 / -0
    That mammals are found in ........... period in ........... era 
    Solution
    Mesozoic Era is a geologic period and framework which ranges252 to 66 million years ago. to the start of the Triassic time frame 251.902. first mammals have seen in a Triassic period and the accompanying Triassic time frame has a place with the Mesozoic time. 
    So, the correct option is 'Triassic, Mesozoic'.
  • Question 9
    1 / -0
    Oparin-Haldane's view on the origin of life was first experimentally proved by :
  • Question 10
    1 / -0
    Human ancestors first to build hunts and wear animal hides were
    Solution
    • Peking man is homo erectus pekinensis and Sinanthropus erectus
    • Lived in built home
    • hunts and wears 
    • cranial capacity 850-1300 c.c.
    • Complete erect posture
    So, the correct answer is 'Peking man'
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